# 十一，文本进度条
import time
incomplete_sign = 50
print("="*23+"开始下载"+"="*25)
for i in range(incomplete_sign + 1):
    completed = "*" * i
    incomplete = "." * (incomplete_sign - i)
    percentage = (i / incomplete_sign) * 100
    print("\r{:.0f}%[{}{}]".format(percentage, completed, incomplete), end="")
    time.sleep(0.5)
print("\n"+"="*23+"下载完成"+"="*25)